Package org.apache.kafka.common.metrics.stats

Class Histogram.ConstantBinScheme

java.lang.Object
org.apache.kafka.common.metrics.stats.Histogram.ConstantBinScheme
All Implemented Interfaces:
Histogram.BinScheme
Enclosing class:
Histogram
public static class Histogram.ConstantBinScheme extends Object implements Histogram.BinScheme
A scheme for calculating the bins where the width of each bin is a constant determined by the range of values and the number of bins.

  • Constructor Summary

    Constructors
    Constructor
    Description
    ConstantBinScheme(int bins, double min, double max)
    Create a bin scheme with the specified number of bins that all have the same width.

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    bins()
    Get the number of bins.
    double
    fromBin(int b)
    Determine the value at the upper range of the specified bin.
    int
    toBin(double x)
    Determine the 0-based bin number in which the supplied value should be placed.

    Methods inherited from class java.lang.Object

    equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • ConstantBinScheme

      public ConstantBinScheme(int bins, double min, double max)
      Create a bin scheme with the specified number of bins that all have the same width.
      Parameters:
      bins - the number of bins; must be at least 2
      min - the minimum value to be counted in the bins
      max - the maximum value to be counted in the bins

  • Method Details

    • bins

      public int bins()
      Description copied from interface: Histogram.BinScheme
      Get the number of bins.
      Specified by:
      bins in interface Histogram.BinScheme
      Returns:
      the number of bins

    • fromBin

      public double fromBin(int b)
      Description copied from interface: Histogram.BinScheme
      Determine the value at the upper range of the specified bin.
      Specified by:
      fromBin in interface Histogram.BinScheme
      Parameters:
      b - the 0-based bin number
      Returns:
      the value at the upper end of the bin; or negative infinity if the bin number is negative or positive infinity if the 0-based bin number is greater than or equal to the number of bins.

    • toBin

      public int toBin(double x)
      Description copied from interface: Histogram.BinScheme
      Determine the 0-based bin number in which the supplied value should be placed.
      Specified by:
      toBin in interface Histogram.BinScheme
      Parameters:
      x - the value
      Returns:
      the 0-based index of the bin